"I ve been working on a couple of period films, so I m a fifties and sixties fanatic right now," said Jennifer Lopez of the influences behind her latest Sweetface collection. The multihyphenate star scaled way, way back from her MTV-ready runway debut of a year ago to present her new fall line in the comparably intimate confines of Industria Studios. The better to see how it s changed, she suggested in her opening remarks. Yes, there s still a heavy street influence—this came across most clearly in the models inch-long pearly press-on nails—but the line is much more trend-friendly now. Volume, bows, waist-cinching belts—Sweetface has them all. The first two came together beautifully in a floppy navy trench that a few insiders may think looks Burberry-esque. With J. Lo s imprimatur, fashion outsiders—i.e., pretty much the entire population—will think it s the very definition of cool.